1231980148854 has 384 divisors, whose sum is σ = 3721492684800. Its totient is φ = 294426887040.

The previous prime is 1231980148853. The next prime is 1231980148909. The reversal of 1231980148854 is 4588410891321.

1231980148854 is a `hidden beast` number, since 1 + 2 + 31 + 9 + 80 + 1 + 488 + 54 = 666.

It is a super-3 number, since 3×1231980148854³ (a number of 37 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1231980148854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231980148853) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 27894369 + ... + 27938499.

It is an arithmetic number, because the mean of its divisors is an integer number (9691387200).

Almost surely, 2^{1231980148854} is an apocalyptic number.

1231980148854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231980148854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1860746342400).

1231980148854 is an abundant number, since it is smaller than the sum of its proper divisors (2489512535946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231980148854 is a wasteful number, since it uses less digits than its factorization.

1231980148854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44217 (or 44198 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 1231980148854 in words is "one trillion, two hundred thirty-one billion, nine hundred eighty million, one hundred forty-eight thousand, eight hundred fifty-four".